|   | 1. | I                have reviewed this annual report on Form 10-K of Navistar Financial                Corporation (“NFC”), subsidiary of International Truck and Engine                Corporation; |
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|   | 2. | Based                on my knowledge, this report does not contain any untrue statement                of a                material fact or omit to state a material fact necessary to make                the                statements made, in light of the circumstances under which such statements                were made, not misleading with respect to the period covered by this                report; |
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|   | 3. | Based                on my knowledge, the financial statements, and other financial information                included in this report, fairly present in all material respects                the                financial condition, results of operations and cash flows of NFC                as of,                and for, the periods presented in this                report; |
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|   | 4. | NFC’s                other certifying officer and I are responsible for establishing and                maintaining disclosure controls and procedures (as defined in Exchange                Act                Rules 13a-15(e) and 15d-15(e)) for NFC and                have: |
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|   | a) | Designed                such disclosure controls and procedures, or caused such disclosure                controls and procedures to be designed under our supervision, to                ensure                that material information relating to NFC, including its consolidated                subsidiaries, is made known to us by others within those entities,                particularly during the period in which this report is being                prepared; |
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|   | b) | Evaluated                the effectiveness of NFC’s disclosure controls and procedures and                presented in this report our conclusions about the effectiveness                of the                disclosure controls and procedures, as of the end of the period covered                by                this report based on such evaluation;                and |
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|   | c) | Disclosed                in this                report any change in NFC’s internal control over financial                reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f))                that                occurred during NFC’s most recent fiscal quarter (NFC’s fourth fiscal                quarter in the case of an annual report) that has materially affected,                or                is reasonably likely to materially affect, NFC’s internal control over                financial reporting; and |
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|   | 5. | NFC’s                other certifying officer and I have disclosed, based on our most                recent                evaluation of internal control over financial reporting, to NFC’s auditors                and the audit committee of registrant’s board of directors (or persons                performing the equivalent                functions): |
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|   | a) | All                significant deficiencies and material weaknesses in the design or                operation of internal control over financial reporting which are                reasonably likely to adversely affect NFC’s ability to record, process,                summarize and report information;                and |
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|   | b) | Any                fraud, whether or not material, that involves management or other                employees who have a significant role in NFC’s internal controls over                financial reporting. |
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| Date:   December                7, 2007 | /s/    |  JOHN                V.                MULVANEY |
|--------------------------------------------------------|--------|------------------------------------------------------|
|                                                   |   |                  John V. Mulvaney               |
|                                                   |   |  (Principal                Financial Officer)   |

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